The sixth season of Seventh Heaven begins with "Changes," in which Mary (Jessica Biel) moves to Buffalo, where she hopes to wed her erstwhile boyfriend Wilson West (Andrew Keegan); she also intends to become a professional firefighter in "Work." Season six comes to an eventful finale as Matt, newly accepted by Columbia University Medical School, prepares to wed his classmate Sarah Glass (Sarah Danielle Madison), a Jewish girl; a relationship that Matt's minister father, Eric, and Sarah's rabbi father, Richard (Richard Lewis), are compelled to come to terms with after an initial period of discomfort and resistance in "Holy War Parts 1 and 2." Special guest stars include Kaley Cuoco in "Relationships" and singer Joy Enriquez in "Ay Caramaba."